Paul Offit, author of Do You Believe in Magic?
Topic: The sense and nonsense of alternative medicine.Issues: What is “alternative medicine”?; megavitamins actually increase the risk of some cancers and heart disease (something well known to scientists but not to the general public); celebrity spokespeople (Like Jenny McCarthy and her anti-vaccine campaign) who have no medical background and are doing more damage than good; alternative medicine treatments that actually work.